Xiumin is the classic example of a nerd. He does his homework a week ahead of time, studies for weeks before a test, and is about as shy as they come. However, Chen, the school rebel, takes an interest in his fellow classmate. Just as he begins to think that he may have a shot at this fragile introvert's heart, he finds that Xiumin has also captured the attention of the Senior Class President, Luhan. Xiumin unintentinally falls for the both of them, and has no idea what to do next. Chen is not willing to back down, but, then again, Luhan isn't willing to give up either, especially when it comes to Kim Minseok, who can't decide whether he wants to be with a leather-jacket-wearing and charismatic bad boy, or a kind-hearted member of the student council who just wants what's best for him.